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Which of the following processes is associated with a change in the cellular DNA amount?
[1999]
- a)Spore germination
- b)Cytokinesis
- c)Fertilization
- d)Blastulation
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following processes is associated with a change in the ce...
Cytokinesis involves division of the cytoplasm of the parent cell into its daughter cells. Fertilization involves the fusion of two haploid gametes. Blastulation refers to the process of cleavage in the zygote to form a blastula.
Most Upvoted Answer
Which of the following processes is associated with a change in the ce...
Fertilization is associated with a change in the cellular DNA amount.
Explanation:
Fertilization is the process by which the sperm and the egg fuse to form a zygote. During fertilization, the haploid sperm and egg combine to form a diploid zygote. This results in a change in the cellular DNA amount, as the zygote now contains a complete set of genetic information.
The process of fertilization involves the following steps:
1. Sperm activation: The sperm undergoes a series of changes that enable it to penetrate the egg.
2. Acrosomal reaction: The acrosome, a structure at the tip of the sperm, releases enzymes that help to break down the outer layer of the egg.
3. Fusion of gametes: The sperm and egg membranes fuse, allowing the sperm nucleus to enter the egg.
4. Formation of the zygote: The sperm and egg nuclei combine to form a diploid zygote.
Once the zygote is formed, it undergoes a series of cell divisions (cleavage) to form a blastula. The blastula then develops into an embryo through a process called gastrulation.
In summary, fertilization is associated with a change in the cellular DNA amount because it results in the formation of a diploid zygote with a complete set of genetic information.
Explanation:
Fertilization is the process by which the sperm and the egg fuse to form a zygote. During fertilization, the haploid sperm and egg combine to form a diploid zygote. This results in a change in the cellular DNA amount, as the zygote now contains a complete set of genetic information.
The process of fertilization involves the following steps:
1. Sperm activation: The sperm undergoes a series of changes that enable it to penetrate the egg.
2. Acrosomal reaction: The acrosome, a structure at the tip of the sperm, releases enzymes that help to break down the outer layer of the egg.
3. Fusion of gametes: The sperm and egg membranes fuse, allowing the sperm nucleus to enter the egg.
4. Formation of the zygote: The sperm and egg nuclei combine to form a diploid zygote.
Once the zygote is formed, it undergoes a series of cell divisions (cleavage) to form a blastula. The blastula then develops into an embryo through a process called gastrulation.
In summary, fertilization is associated with a change in the cellular DNA amount because it results in the formation of a diploid zygote with a complete set of genetic information.
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Community Answer
Which of the following processes is associated with a change in the ce...
Yes, it's fertilization.,becz In fertilization two haploid gamets fuse to form a diploid cell and thus changes DNA amount
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Which of the following processes is associated with a change in the cellular DNA amount?[1999]a)Spore germinationb)Cytokinesisc)Fertilizationd)BlastulationCorrect answer is option 'C'. Can you explain this answer?
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